Not a valid Sudoku answer. Each 3x3 section has to have the digits 1-9.
Top left 3x3 section should contain 1-9:
5, 3, 1 6, 2, 3 1, 9, 1
It contains 1 three times, 3 twice, and it's missing 4, 7, and 8.
Top middle contains 7 twice and misses 8; top right misses 1 and 3 and has 4 and 8 twice; etc.
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Not a valid Sudoku answer. Each 3x3 section has to have the digits 1-9.
Top left 3x3 section should contain 1-9:
5, 3, 1
6, 2, 3
1, 9, 1
It contains 1 three times, 3 twice, and it's missing 4, 7, and 8.
Top middle contains 7 twice and misses 8; top right misses 1 and 3 and has 4 and 8 twice; etc.